CN114189128B - Resistance-sense consistency direct current loop, converter and rail transit vehicle - Google Patents
Resistance-sense consistency direct current loop, converter and rail transit vehicle Download PDFInfo
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- CN114189128B CN114189128B CN202010866056.0A CN202010866056A CN114189128B CN 114189128 B CN114189128 B CN 114189128B CN 202010866056 A CN202010866056 A CN 202010866056A CN 114189128 B CN114189128 B CN 114189128B
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- 239000003990 capacitor Substances 0.000 claims abstract description 85
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 31
- 239000010949 copper Substances 0.000 claims description 31
- 230000001427 coherent effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 10
- 230000003068 static effect Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 4
- 239000000306 component Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/02—Mountings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a resistance-inductance consistency direct current loop of a converter, which is characterized in that a capacitor component comprises: a DC support capacitor having a DC support capacitor terminal; the converter module includes: the IGBT device group comprises IGBT devices which are symmetrically arranged and connected in parallel with the connecting line of the direct-current supporting capacitor terminal, and the IGBT device group is connected in series with the direct-current supporting capacitor terminal through the symmetrical line of the connecting line of the direct-current supporting capacitor terminal; the direct current sides of the IGBT devices face the same side. Through optimizing the physical structures of the cabinet capacitor assembly and the converter module, the fully symmetrical loop design is adopted, so that the loop resistance and inductance of the branches of each IGBT device in parallel are ensured to have higher consistency, the low inductance of the loop is ensured, the static current sharing performance of the IGBT device in parallel is effectively improved, the difference of the output current and the loss of each IGBT device is reduced, and the temperature sharing performance is improved. In addition, the invention also discloses a converter with the resistance-sense consistency direct current loop and a rail transit vehicle.
Description
Technical Field
The invention relates to the technical field of rail transit vehicles, in particular to a resistance-sense consistency direct current loop, a converter and a rail transit vehicle.
Background
With the increasing demand of the rail transportation industry for megawatt high-power converters, higher demands are being placed on the current, voltage and power levels of IGBTs. In order to meet the design requirement of a high-power circuit, an IGBT with a high power level is generally directly selected or an IGBT with a smaller power level is selected to meet the circuit requirement through series-parallel connection. The former will greatly increase the cost of the product and the complexity of the drive circuit, while the latter is widely sought after because of the abundance of market sources, low drive power and simple drive circuitry. Therefore, research application of IGBT parallel technology helps to meet the demand for greater power.
When the IGBT devices are operated in parallel, current distribution of the IGBT devices in parallel is uneven due to dispersion of parameters of each module, unreasonable design of a driving circuit, asymmetric circuit layout and the like, so that currents output by each device are different, overload of part of devices is caused, output effect of equipment is not ideal, and even the devices and the devices are damaged. This will reduce the stability of the system, with serious consequences for operation, and the lifetime of the IGBT module itself will be greatly shortened.
The saturation voltage drop of the existing parallel IGBT is positive temperature coefficient, dynamic current sharing becomes a main difficulty for restricting the IGBT parallel technology, and more attention is paid to dynamic current sharing in the current application, and static current sharing is gradually ignored. At present, test results show that when the IGBT device in the IGBT parallel circuit is consistent in selection, the difference of equivalent resistances of the tiny collector or emitter leads can cause great difference of static current sharing, so that the layout, lead arrangement and the like of the parallel IGBT device have great influence on the current sharing effect. When the influence of the main circuit on IGBT current sharing is considered, dynamic current sharing is considered, static current sharing is considered, and the purposes of dynamic and static current sharing and soaking are achieved.
Therefore, how to provide a dc loop with consistent resistance of a converter, so as to achieve consistency of inductance and resistance of each parallel branch in a converter module, so as to reduce static non-uniformity of parallel connection of IGBTs is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a current-transformer resistance-consistent direct current loop, which realizes consistency of inductance and resistance of each parallel branch in a current transformer module, so as to reduce static non-uniformity of parallel IGBT. In addition, the invention also provides a converter with the resistance-sense consistency direct current loop and a rail transit vehicle.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a resistance-sense consistency direct current loop of a current transformer comprises a capacitor component arranged in a current transformer cabinet body and a current transformer module electrically connected with the capacitor component,
the capacitive assembly includes: a DC support capacitor having a DC support capacitor terminal;
the converter module includes: an IGBT device group including IGBT devices symmetrically arranged and connected in parallel with respect to a line of the dc support capacitance terminals, the IGBT device group being connected in series with the dc support capacitance terminals through a line symmetrical with respect to the line of the dc support capacitance terminals;
the direct current sides of the IGBT devices face the same side.
Preferably, in the above-mentioned resistive sense consistent dc loop, the symmetrical circuit includes:
the capacitor busbar is connected with the direct-current support capacitor terminal in series, and the capacitor busbar is symmetrical with the connecting line of the direct-current support capacitor terminal;
and the IGBT busbar is symmetrical with respect to the connecting line of the direct-current supporting capacitor terminal, and is connected with the IGBT device group and the capacitor busbar in series.
Preferably, in the resistive sense consistency direct current loop, the positive copper bar and the negative copper bar of the IGBT busbar are both U-shaped and stacked, and the capacitor busbar has a flat plate structure.
Preferably, in the above-mentioned resistive sense consistent dc loop, the symmetrical circuit further includes: and the positive electrode and the negative electrode of the busbar slotting tool are symmetrically arranged about a connecting line of the direct-current supporting capacitor terminal.
Preferably, in the dc circuit with uniform resistance and inductance, the busbar cutter includes two L-shaped structures, one of which is positive and the other of which is negative, and is symmetrically distributed on two sides of the dc supporting capacitor terminal.
Preferably, in the resistive sense consistency dc loop, the busbar cutter is fixedly connected to the capacitor busbar through a bolt, the IGBT busbar is fixedly connected to the IGBT device through a bolt, and the capacitor busbar is fixedly connected to the dc support capacitor terminal through a bolt.
Preferably, in the resistive sense consistency direct current loop, the IGBT busbar is connected in series with the busbar cutter through a connection copper bar, and the positive electrode piece and the negative electrode piece of the connection copper bar are symmetrically arranged.
Preferably, in the dc circuit with consistent resistance and inductance, the positive electrode and the negative electrode of the busbar cutter are electrically connected with the connection copper bar through a quick connector.
Preferably, in the resistive sense consistency dc circuit, the quick connector is a spring type quick connector, and the connection copper bar is an L-shaped copper bar.
Preferably, in the resistive sense consistency direct current loop, the connection copper bar and the IGBT busbar are fixed by bolts.
Preferably, in the resistive sense consistency direct current loop, the positive and negative electrodes at the connection part of the direct current support capacitor terminal and the capacitor busbar are staggered.
Preferably, in the above-mentioned resistive sense consistent dc loop, the converter module further includes: the double-sided radiator is symmetrical with respect to the direct-current supporting capacitor terminal, and the IGBT devices are distributed on radiating surfaces on two sides of the double-sided radiator.
Preferably, in the dc circuit with uniform resistance and inductance, the double-sided radiator is installed in the converter cabinet body in a sliding manner.
A current transformer comprising a resistive sense coherent dc loop as defined in any one of the preceding claims.
The rail transit vehicle comprises a converter, wherein the converter is the converter.
According to the current-resistance-consistency direct-current loop of the converter, through optimizing physical structures of the capacitor assembly of the cabinet body and the converter module, the loop resistance and inductance of the parallel IGBT device branches are guaranteed to have higher consistency by adopting a fully symmetrical loop design, low inductance of the loop is guaranteed, meanwhile, static current sharing performance of the parallel IGBT device is effectively improved, difference of output current and loss of the IGBT device is reduced, and temperature sharing performance is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a resistive sense consistent DC loop disclosed in an embodiment of the present invention;
FIG. 2 is a side view of a resistive sense consistent DC loop as disclosed in an embodiment of the present invention;
FIG. 3 is a front view of a capacitive assembly disclosed in an embodiment of the invention;
FIG. 4 is a side view of a capacitive assembly disclosed in an embodiment of the invention;
FIG. 5 is a top view of a capacitive assembly disclosed in an embodiment of the invention;
fig. 6 is a front view of a converter module disclosed in an embodiment of the invention.
Detailed Description
The invention discloses a resistance-inductance-consistency direct current loop of a converter, which realizes consistency of inductance and resistance of each parallel branch in a converter module so as to reduce static non-uniformity of IGBT parallel connection. In addition, the invention also discloses a converter with the resistance-sense consistency direct current loop and a rail transit vehicle.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-6, the present application further discloses a dc loop with consistent resistance and inductance of a current transformer, including a capacitor assembly installed in a current transformer cabinet body and a current transformer module electrically connected to the capacitor assembly, where the capacitor assembly includes: the dc supporting capacitor 1 having the dc supporting capacitor terminal, the dc supporting capacitor 1 is used as a core component of the capacitor assembly for energy storage, and is electrically connected with the converter module through the dc supporting capacitor terminal, the structure and the size of the dc supporting capacitor 1 are not limited herein, and specifically, the connection line of the dc supporting capacitor terminal forms a symmetry axis of the whole dc loop. The converter module includes: and the IGBT device group comprises IGBT devices 7 which are symmetrically arranged and connected in parallel with the direct-current supporting capacitor terminals, and the IGBT device group is connected in series with the direct-current supporting capacitor terminals through lines which are symmetrical with the direct-current supporting capacitor terminals. The direct current sides of the IGBT devices 7 are all facing the same side. Through optimizing the physical structures of the cabinet capacitor assembly and the converter module, the fully symmetrical loop design is adopted, so that the loop resistance and inductance of the branches of each IGBT device in parallel are ensured to have higher consistency, the low inductance of the loop is ensured, the static current sharing performance of the IGBT device in parallel is effectively improved, the difference of the output current and the loss of each IGBT device is reduced, and the temperature sharing performance is improved.
In a specific embodiment, the symmetrical circuit includes: and the capacitor busbar 2 and the IGBT busbar 6 are used for realizing the electric connection of the capacitor component and the transformer module through the capacitor busbar 2 and the IGBT busbar 6. In order to ensure the consistency of the resistances of the branches, the capacitor busbar 2 and the IGBT busbar 6 are both arranged symmetrically with the connecting line of the direct-current supporting capacitor terminal. Specifically, the dc supporting capacitor terminal, the capacitor busbar 2, the IGBT busbar 6, and the IGBT device 7 are arranged in series. In practice, other structures may be used to realize the series connection of the dc supporting capacitor 1 and the IGBT device 7.
Preferably, the positive copper bar and the negative copper bar of the IGBT busbar 6 are both U-shaped and stacked, i.e. the IGBT busbar 6 has a U-shaped structure, and the adoption of the U-shaped structure can effectively reduce the stray inductance of the direct current loop and the peak voltage when the IGBT device is turned on or off, and the U-shaped design of the positive copper bar and the negative copper bar has the characteristic of consistent paths, thereby being beneficial to realizing the consistency of the main loop of the symmetrical IGBT device 7. In addition, the capacitor busbar 6 has a flat plate structure, and the structure is simple.
In a further embodiment, the symmetrical circuit further includes a busbar cutter 3 for connecting the capacitor busbar 2 and the IGBT busbar 6 in series, and the positive electrode and the negative electrode of the busbar cutter 3 are symmetrically arranged about the connection line of the dc supporting capacitor terminal.
The busbar slotting tool 3 comprises two L-shaped structures, namely two plates of the busbar slotting tool 3 are L-shaped, and are symmetrically arranged during installation, namely right-angle openings of the L-shaped structures are opposite or oppositely arranged, and one right-angle side of the L-shaped structures is fixedly connected with the capacitor busbar 2. Preferably, two L-shaped structures are distributed on two sides of the direct current support capacitor terminal. Other structures are also possible for the shape of the busbar pocket knife 3, so long as the symmetry of the parts arranged at the two sides of the direct current support capacitor terminal is ensured. The connection part of the direct-current supporting capacitor terminal and the capacitor busbar 2 is arranged between the positive electrode and the negative electrode of the busbar slotting tool, and under the condition of meeting the requirement of electric insulation design, the consistency of the positive path and the negative path from the positive electrode and the negative electrode of the direct-current supporting capacitor 1 to the positive electrode and the negative path of the busbar slotting tool 3 can be ensured, and the resistance consistency of a circuit of the connection section is effectively improved.
Specifically, the busbar slotting tool 3 is fixed on the capacitor busbar 2 through bolts, and the IGBT busbar 6 is fixedly connected with the IGBT device 7 through bolts. The capacitor busbar 2 is fixedly connected with the direct-current support capacitor terminal through bolts. The bolt connection is adopted, the connection is reliable and convenient to detach, and other connection modes such as clamping or bonding and the like can be adopted in practice and are all within the protection range.
Further, the IGBT busbar 6 is connected with the busbar slotting tool 3 in series through the connecting copper bar 5, and the positive electrode piece and the negative electrode piece of the connecting copper bar 5 are symmetrically arranged, so that the connecting position is adjusted through the connecting copper bar 5, and the stability of electric connection is ensured.
In order to realize the electrical connection between the capacitor assembly and the converter module, specifically, the electrical connection between the copper bar 5 and the busbar slotting tool 3 is realized, and the quick connector 4 is further arranged in the application. The quick connector 4 can realize quick electrical connection between the busbar slotting tool 3 and the connecting copper bar 5, so that bolt fastening is avoided, and the installation and maintenance time of the converter module is saved.
In a specific embodiment, the quick connector 4 is a spring type quick connector, and the connection copper bar 5 is an L-shaped copper bar. The spring piece type quick connector 4 realizes quick connection through deformation of the spring piece, and has simple structure and reliable connection. Through the design of the U-shaped IGBT busbar 6 and the combined connection of the L-shaped connection copper bars 5, the use quantity and the material cost of the composite busbar are reduced, the volume space for parallel application of the IGBT device 7 can be effectively saved, and the structure is simpler and more compact. The specific shape of the connecting copper bars 5 can be set according to different requirements and is within the protection range.
Specifically, the connection copper bar 5 and the IGBT busbar 6 are fixed by bolts. The fixing manner of connecting the copper bar 5 and the IGBT busbar 6 is disclosed herein, and other fixing manners, such as clamping or bonding, may be adopted in practice.
In a specific embodiment, the positive and negative electrodes at the connection position of the direct current support capacitor terminal and the capacitor busbar 2 are staggered. This section may be referred to as a specific structure in the prior art.
In order to achieve heat dissipation, the converter module further includes a double-sided heat sink, wherein the double-sided heat sink 8 is a heat sink symmetrical with respect to the dc supporting capacitor terminal, and the IGBT devices 7 are distributed on the heat dissipation surfaces on both sides of the double-sided heat sink 8. Specifically, the double-sided radiator 8 is installed in the converter cabinet body in a drawing and sliding manner. The specific connection modes of the double-sided radiator 8 and the converter cabinet body can be set according to different requirements and are all within the protection range.
In combination with the above arrangement, the present application can realize the configuration of the parallel number of IGBT devices 7 by adjusting the external ac busbar connection mode or the like. The direct current loop connection structure can realize the universality of the parallel topology structure of different IGBT devices 7, meets the power output of different grades, and is favorable for realizing the simplified, unified and standardized design of materials. According to the actual power demand, the parallel quantity of the IGBTs can be further expanded, and the serial design of the converter modules is realized.
In addition, the present application discloses a current transformer, including a dc loop with consistent resistance, where the dc loop with consistent resistance is a dc loop with consistent resistance as disclosed in the above embodiment, so that the current transformer with the dc loop with consistent resistance also has all the above technical effects, and will not be described in detail herein.
In addition, the application also discloses a rail transit vehicle which comprises a converter, wherein the converter is disclosed in the embodiment, and therefore the rail transit vehicle with the converter has all the technical effects.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A resistance-sense consistency direct current loop of a current transformer comprises a capacitor component arranged in a current transformer cabinet body and a current transformer module electrically connected with the capacitor component, and is characterized in that,
the capacitive assembly includes: a DC support capacitor (1) having a DC support capacitor terminal;
the converter module includes: an IGBT device group including IGBT devices (7) symmetrically arranged and connected in parallel with respect to a line of the dc support capacitance terminals, the IGBT device group being connected in series with the dc support capacitance terminals through a line symmetrical with respect to the line of the dc support capacitance terminals;
the direct current sides of the IGBT devices (7) face the same side;
the symmetrical circuit includes:
the capacitor busbar (2) is connected in series with the direct-current supporting capacitor terminal, and the capacitor busbar (2) is symmetrical with respect to a connecting line of the direct-current supporting capacitor terminal;
the IGBT busbar (6) is symmetrical about a connecting line of the direct-current supporting capacitor terminal, and the IGBT busbar (6) is connected with the IGBT device group and the capacitor busbar (2) in series;
the symmetrical circuit further includes: and the busbar slotting tools (3) are used for connecting the capacitor busbar (2) and the IGBT busbar (6) in series, and the positive electrode and the negative electrode of the busbar slotting tools (3) are symmetrically arranged about the connecting line of the direct-current supporting capacitor terminal.
2. The resistive sense consistency direct current loop according to claim 1, wherein the positive copper bars and the negative copper bars of the IGBT busbar (6) are U-shaped and stacked, and the capacitor busbar (2) is of a flat plate structure.
3. The dc circuit of claim 1, wherein the busbar cutter (3) includes two L-shaped structures, one positive and one negative, and is symmetrically disposed on both sides of the dc supporting capacitor terminal.
4. The resistive sense consistency direct current loop according to claim 1, wherein the busbar cutter (3) is fixedly connected to the capacitor busbar (2) through bolts, the IGBT busbar (6) is fixedly connected to the IGBT device (7) through bolts, and the capacitor busbar (2) is fixedly connected to the direct current support capacitor terminal through bolts.
5. The resistive sense consistency direct current loop according to claim 2, wherein the IGBT busbar (6) is connected in series with the busbar cutter (3) through a connection copper bar (5), and positive and negative pole pieces of the connection copper bar (5) are symmetrically arranged.
6. The resistive sense consistency direct current loop according to claim 5, wherein the positive pole and the negative pole of the busbar cutter (3) are electrically connected with the connecting copper bar (5) through a quick connector (4).
7. The dc circuit of claim 6, wherein the quick connector (4) is a spring type quick connector, and the connection copper bar (5) is an L-shaped copper bar.
8. The resistive sense consistency direct current loop according to claim 5, characterized in that the connecting copper bar (5) and the IGBT busbar (6) are fixed by bolts.
9. The resistive sense consistency direct current loop according to claim 1, wherein the positive and negative poles of the connection part of the direct current support capacitor terminal and the capacitor busbar (2) are staggered.
10. The resistive sense uniform dc circuit according to any of claims 1-9, wherein the converter module further comprises: the double-sided radiator (8), the double-sided radiator (8) is a radiator symmetrical to the direct current support capacitor terminal, and the IGBT devices (7) are distributed on radiating surfaces on two sides of the double-sided radiator (8).
11. The inductance-consistent dc circuit of claim 10, wherein the double-sided heat sink (8) is slidably mounted in the converter cabinet by pulling.
12. A current transformer comprising a resistive sense coherent dc loop according to any one of claims 1-10.
13. A rail transit vehicle comprising a current transformer, wherein the current transformer is a current transformer as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010866056.0A CN114189128B (en) | 2020-08-25 | 2020-08-25 | Resistance-sense consistency direct current loop, converter and rail transit vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010866056.0A CN114189128B (en) | 2020-08-25 | 2020-08-25 | Resistance-sense consistency direct current loop, converter and rail transit vehicle |
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| Publication Number | Publication Date |
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| CN114189128A CN114189128A (en) | 2022-03-15 |
| CN114189128B true CN114189128B (en) | 2024-03-01 |
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| KR20070120237A (en) * | 2006-06-19 | 2007-12-24 | 홍억선 | The igbt stack device of the equipartition parallel construct for the bulk electric power inverter |
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| WO2018040308A1 (en) * | 2016-08-31 | 2018-03-08 | 浙江海得新能源有限公司 | Power cabinet for wind power converter |
| CN109510474A (en) * | 2018-11-27 | 2019-03-22 | 江苏同芯电气科技有限公司 | A kind of large capacity inverter module that high current/high-voltage I GBT is directly in parallel |
| CN109525126A (en) * | 2018-12-29 | 2019-03-26 | 上海大郡动力控制技术有限公司 | Major loop topological structure based on IGBT parallel current-sharing |
| CN209731098U (en) * | 2019-05-30 | 2019-12-03 | 成都通用整流电器研究所 | A kind of plasma power supply IGBT copped wave rectification unit modular structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10917992B2 (en) * | 2017-01-13 | 2021-02-09 | Cree Fayetteville, Inc. | High power multilayer module having low inductance and fast switching for paralleling power devices |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070120237A (en) * | 2006-06-19 | 2007-12-24 | 홍억선 | The igbt stack device of the equipartition parallel construct for the bulk electric power inverter |
| CN202026233U (en) * | 2011-03-03 | 2011-11-02 | 深圳市禾望电气有限公司 | IGBT(Insulated Gate Bipolar Transistor) power module system structure |
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| CN114189128A (en) | 2022-03-15 |
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